A treatise on surveying and navigation: uniting the theoretical, the practical, and the educational features of these subjects (1852)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst · leaf 207
37; what was thecorrection for parallax, and what was the true altitude as seen fromthe center of the earth ? p=5T 37=3457 log. - - 3.23869931° 25cos. - - 9.931152 x=49 10=2950 log. - - . 3.469851 Ans. Cor. for parallax 49 10True altitude 32° 13 102. The apparent altitude of the moons center on a… … 202 CELESTIAL OBSERVATIONS. No other examples of this kind are necessary, as they will inciden-tally occur in several places further on. It now remains to describe the instrument used for taking anglesat sea. We, therefore, give the following illustrations on the QUADRANT AND SEXTANT. The quadrant…
Surveying · Navigation
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